Mold.



W. M. VENABLE. MOLD.

APPLICATION FILED JAN. 31, 1912.

L1 Q9 M% Patented Feb. 23, 1915.

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. Specification of Letters JPatent. Pm1tnfimd F b. @3 19mg Applicationfiled January 81, 191%. Serial No. 874,532.

To all whom it may concern."

Be it known that T, WILLIAM MAYO VEN- ABLE, a citizen of the UnitedStates, residing at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have in' vented certain new and useful Improvements inMolds, of which the following is a s ecification.

he invention relates to molds or forms for use in the formation ofwalls, floors, ceilings and the like from plastic material such forexample as concrete. The invention has for its primary objects;theprovision ofan improved metal panel construction whereby a mold maybe built up from the individual panels as units, with a minimumamount oflabor; the provision of a panel construction in which the labor usuallyincident to alining the panels is eliminated and a moldin surface withall its component parts in per ect alinement is'insured; the provisionof a panel construction having improved means for reinforcing theconstruction laterally and which may be incorporated into the formwithout dificulty, as 1t is built up, and without the use ofadditionalsecuring means; the provision of an improved fastening means soconstructed that one size and form only of fastening element is requiredthroughout the mold; and the provision of a built-up form constructionin which the constituent panels are reversible and interchangeable.

I One embodiment of my invention is illustrated in the accompanyingdrawings, wherein- Figure 1 is a perspective view showing a partiallybuilt up mold or form;

Figure 2 is a pers ective view on an enlarged scale, of the asteningelements used through the form;

Figure 3 is a perspective view of the securing wedge for engaging theslot in the fastening element of igure 2;

b Figure 4: is a perspective view of the tie Figure 5 is' a pers ectiveview of two of the panels employe in the construction;

Figure 6' is an enlarged section at the juncture between two panels, astiflening 7 plate, and a tie bar.

scale in Fig.

metal plate 1, to the four edges of which are secured the angles 2, 3,4, and 5. These angles are secured to the plate 1 preferably by rivetingor spot weldin and in the construction illustrated the angles areprovided with four slots or perforatlons 6,'although this number mayobvlously'be varied to suit conditions, two slots only belng shown oneach flange in Fig. 1, which 1s 1n a measure diagrammatic.

. The form is built up from the panels as indlcated m Fig. 1, suchpanels being placed side by side and end to end until a form of thedesired size is secured. In order to secure the necessary lateralstifi'ness and to bring the faces of the panels into exact alinementliner-plates 7 are placed between the flanges of adjacent rows ofpanels, such plates extending past the joints between the varlouspanels, and serve to 've the required amount of rigidit to t e structureand to aline the parts. tifiening or alining plates-may be used at eachjoint between respect to edge of the plate that when thefasteningmembers are inserted the faces of the panels and the edge ofthe stiflening plates are in alinement.

The securing means employed is illustrated in Figs. 2 and 3 andcomprises a flat T shaped element or bolt 9 having a slot 10 in whichthe wedge 11 is adapted to fit.

The opposing sides of the form are held in their proper relativepositions by means of the tie bars 12v (Flg. 1), which tie bars arepreferably tapering as indicated in Fig. 4 and are provided in each endwith the slots 13 and 14:. Each panel is provided upon one edge withslots 15 for receiving the ends of the tie bars, such slots beingprovided for by welding strips 16 to the flanges of the angles 4 andleaving out sections of such strips at the points 15. The connection atthe point 15 where a stiffening plate 7 is emp oyed vertically isindicated in Fig. 6 on enlarged scale. From this View it will be seenthat the fastening element or bar 9 extends through the flanges 2 and 4of the flanges upon the panels, and through the stifi'ening plate 7 andthe tie bar 12,-so that all of these parts are secured by this onefastening means. It will be of course-understood that it is immaterialwhether "the panel occupies the position indicated'in Fig. 5 or whetherit is turned 90 degrees so that the strip 16 lies either at the top orthe bottom of the anel instead of at the side thereof. On y one size offastening element 9 is required for the entire structure,

the slot 10 and the wedge 11 being of such proportions that the fastenermay be used where there are four elements to be secured as in Fig. 6, orwhere either the stiflening plate or the tie bar are omitted, or wherethe flanges on the panels abut directly against each other and there areno interposed members.

As hitherto pointed out, the panels are preferably square, the over-alldimension of the panel including the strip 16, being the same as theother over-all dimension at right angles thereto, thus permltting thepanel to be used in the position indicated in Fig. 5 or in anotherposition in which the strip 16 is' horizontal instead of vertical. Thespacing between the slots 6 in each flange of each panel is alsouniform, and the distance from the end slots in each flange from the endof the plate is equal to one-half the distance between the slots, so

that the spacing of the slots 8 in the stiffening plates 7 (Fig. 1) maybe made uniform, and so that such slots 8 will always register with theslots 6. This arrangement of spacing of the slots 6 also permits theplates in adjacent rows to be offset with 40 respect to each other,without causing the slots in the flanges to come out of registration. Asillustrated in Fig. 1 the panels in to insert the fastening means 9through a "portion only of the slots 6.

the upper row are in alinement with the panels in the lower row, but insome cases it may ,be desirable to make break joints with respect to thepanels of the two rows,

' and the arrangement of spacing of the slots 6 permits this to be donewithout causing a 'i'nlsmating of any ofsuch slots in'the flanges ofopposing panels. Usually it is necessary means of the tie bars 12 isillustrated as applied to a slightly different form of'lap plate in Fig.1, the only difference being that the lap plate 19 in Fig. 1 occurs atthe corner of the wall and is provided with T portion 20 also slottedand bent at right angles to the portion of the plate shown as engagingthe tie bars 12. It will be seen "that the tie bars 12 extending throughthe slots 18 in the lap plate prevent such lap plate from moving eithervertically or horizontally. The lap plate may be used at the end of thewall and be of the type indicated in Fig. 1, or may be used at a ointremoved from the end of the wall and e of the type indicated in Fig. 5.In some cases the lap late is entirely free, and in other cases it iswelded at one edge to one of the plates 1, the other edge being free. Inorder to fill out the required space to complete a wall, panels of afraction of the width of the standard panel may be used in some cases,the other dimension of the panel however remaining the same as in thestandard panel.

The slots 15 (Fig. 5) for receiving the tie bars 12 are placed at thesame distance from the ends of the panels in all cases, so that theslots on opposite sides of the wall are always in substantial alinement,and the bars 12 are made tapering as indicated in Fig. 4 in order thatthey may be readily driven from their positions after the concrete haspartially set, the end 21 (Fig. 4:) being of such a length that itprojects out past the flanges 2 and 4 (Fig. 6) and may be readily struckwith a hammer in order to loosen it. The slots 8 in the stiffeningplates 7 while being spaced similarly to the slots 6 in the flanges ofthe angles of the panels, and being of the same length as such slots 6,are preferably slightly greater in Width in order to more readily permitthe insertion of the elements 9. The making of the holding elements 9flat is desirable,

in that the panels are thus prevented from becoming twisted relativelyabout such holding elements as an axis, as would be the case if a roundholding element were used. It will be noted that no labor is required tobring the various panels into alinement, as the insertion of the element9 automatically brings the working faces of the panels into exactalinement. Similarly the use of the elements 9 in connection with thestiffening plates 7 serves to bring all of the panels comprising a rowinto proper alinement. It will a so be noted that no care need beexercised in'gettingthe two sides of the form at the proper distanceapart, as the two forms must be necessarily brought to the exactdistance apart when the holding elements 9 are forced through the slots'13 and 14 in the tie bars 12. The whole form may therefore be assembledby unskilled labor with the assurance that the relation of all the'partsof the form will be absolutely correct. The use of a square meant astandard panel with the spacing as heretofore described, and the onesize of holding element 9 reduces the number of diflerent parts requiredin the mold to a minimum, thus reducing the cost of the equipmentrequired for a particular piece of work to its lowest limits. The laborincident to the assembling and disassembling of the form is stillfurther reduced by reason of the fact that the stiffening plates 7 andtie bars 12 require no additional holding means, the elements 9 whichare required for securing the flanges of the panels together alsoserving to secure the tie bars and stifi'ening plates. Other advantagesincident to the construction will be. apparent to those skilled in theart.

Having thus described my invention and illustrated its use, what I claimas new and desire to secure by Letters Patent, is the a following:

In combination in a form, a row of rettangular metal panels havinperforated flanges at their edges; a secon row of panels also havingperforated flanges at their edges, with their perforated flanges inopposition to the flanges of the first row; a stifl'ening and aliningplate provided with perforations corresponding in spaceing to theperforations in the said flanges and 1ying between the two sets offlanges; and clamping bars extending through the said perforations inthe stiffening plate and both sets of flanges, the said perforations inthe flanges and stiffening plate being positioned at substantially thesame distance from the working faces of the panels and the edge of thelate so that the said faces and the edg'e'of the plate are brought intosubstantial alinement when the clamping bars are inserted through thesaid perforations.

In testimony whereof I have hereunto signed my name in the presence ofthe two subscribed witnesses.

7 WM. MAYO VENABLE.

Witnesses:

Ln'rrrm A. Mme, Ancnwon'rn MARTIN.

